Hair cutting machine



FIG. 1 is a front elevational view of a hair cutting machine showing my new design;

FIG. 2 is a left side elevational view;

FIG. 3 is a right side elevational view;

FIG. 4 is a top plan view; and,

FIG. 5 is a bottom plan view. 

The ornamental design for a hair cutting machine, as shown. 